A full colonic does not mean your bowel is empty, as far as my experience goes. There is still, usually, fecal matter left in the bowel, sometimes from years of being stuck there.
The green looks like bile. The brown looks like poop to me, but one can't be sure. If I get poop in my bowel movements on the morning after drinking the juice and olive oil, I think it may mean that my Bowel Cleanse was not thorough enough. I usually get only green stones or other coloured stones and a lot of liquid - green or transparent.
This is not to say that there isn't fecal matter in the bowel but that it is perhaps not loosened enough to be coming out.
I hope someone more experienced can help you understand this. I still think I am an amateur.